Hi Mahammed, Looks like you're receiving far too much optical power on Te2/8/1. At +2.6dBm, you will be overloading the receiver on any type of optic. That is what the "++" is warning you about. Typically ZR class optics transmit at between +0 and +3 or +5 dBm, and can receive from -7 or -8 dBm down to -23dBm.
I suggest you need a 10dB attenuator on the RX side of Te2/8/1. If you don't have one of those, you could try leaving an air-gap of a few mm - ie. only half plug it in, or bending the patch lead until the link comes up... The proper way is with the attenuator - the other methods are just things to try - to confirm that your problem is too much receive power on Te2/8/1. You probably want the same attenuator in the other direction, though its harder to be definitive when the Rx power is listed as N/A ! I have seen some links work for a while with too much receive power, then stop working - which is the symptom that you describe. Good Luck with it! Regards Tim. Tim Rayner Optical Engineer, AARNet Pty Ltd street address: Building 9, Banks Street, YARRALUMLA ACT 2600 postal address: GPO Box 1559, CANBERRA ACT 2601 t. +61 2 6222 3575 f. +61 2 6222 3535 e. [email protected] w. www.aarnet.edu.au Network Faults (24x7): 1300 APL NOC (1300 275 662) or [email protected] important This email and any files transmitted with it are confidential, and the rights of confidentiality in such information are not waived or lost by its mistaken delivery to you. Any dissemination, copying, use or disclosure of the email and/or such files without the permission of AARNet, or the sender, is strictly prohibited. If you have received this email in error, please contact the sender immediately and delete all copies of this transmission. ________________________________________ From: cisco-nsp [[email protected]] on behalf of Mohammad Khalil [[email protected]] Sent: Tuesday, 8 September 2015 7:26 PM To: [email protected] Subject: [c-nsp] SFP/Transceiver Issue Hi all I am trying to connect a link between my 6509 box and N5K box The link was functioning well , but now it is never up I have tried to change the SFP with no luck Please check below HQ-UM-CORE-VSS#show int Te2/8/1 transceiver Transceiver monitoring is disabled for all interfaces. ITU Channel not available (Wavelength not available), Transceiver is internally calibrated. If device is externally calibrated, only calibrated values are printed. ++ : high alarm, + : high warning, - : low warning, -- : low alarm. NA or N/A: not applicable, Tx: transmit, Rx: receive. mA: milliamperes, dBm: decibels (milliwatts). Optical Optical Temperature Voltage Current Tx Power Rx Power Port (Celsius) (Volts) (mA) (dBm) (dBm) ---------- ----------- ------- -------- -------- -------- Te2/8/1 28.8 0.00 69.2 -- 1.6 2.6 ++ HQ-UM-N5K-B# show int ethernet 1/1 transceiver Ethernet1/1 transceiver is present type is 10Gbase-(unknown) name is CISCO-FUJITSU part number is FIM35050/203 revision is 0001 serial number is FLJ1708K03G nominal bitrate is 11100 MBit/sec Link length supported for 9/125um fiber is 80 km cisco id is -- cisco extended id number is 4 HQ-UM-CORE-VSS#show int tenGigabitEthernet 2/8/1 transceiver detail Transceiver monitoring is disabled for all interfaces. ITU Channel not available (Wavelength not available), Transceiver is internally calibrated. mA: milliamperes, dBm: decibels (milliwatts), NA or N/A: not applicable. ++ : high alarm, + : high warning, - : low warning, -- : low alarm. A2D readouts (if they differ), are reported in parentheses. The threshold values are calibrated. High Alarm High Warn Low Warn Low Alarm Temperature Threshold Threshold Threshold Threshold Port (Celsius) (Celsius) (Celsius) (Celsius) (Celsius) ---------- ------------------ ---------- --------- --------- --------- Te2/8/1 33.2 74.0 70.0 0.0 -4.0 High Alarm High Warn Low Warn Low Alarm Voltage Threshold Threshold Threshold Threshold Port (Volts) (Volts) (Volts) (Volts) (Volts) ---------- --------------- ---------- --------- --------- --------- Te2/8/1 0.00 N/A N/A N/A N/A High Alarm High Warn Low Warn Low Alarm Current Threshold Threshold Threshold Threshold Port (milliamperes) (mA) (mA) (mA) (mA) ---------- ----------------- ---------- --------- --------- --------- Te2/8/1 69.3 -- N/A N/A N/A N/A Optical High Alarm High Warn Low Warn Low Alarm Transmit Power Threshold Threshold Threshold Threshold Port (dBm) (dBm) (dBm) (dBm) (dBm) ---------- ----------------- ---------- --------- --------- --------- Te2/8/1 1.6 7.9 3.9 0.0 -4.0 Optical High Alarm High Warn Low Warn Low Alarm Receive Power Threshold Threshold Threshold Threshold Port (dBm) (dBm) (dBm) (dBm) (dBm) ---------- ----------------- ---------- --------- --------- --------- Te2/8/1 2.7 ++ -3.0 -7.0 -24.0 -28.2 ========================================================================== HQ-UM-N5K-B# show int eth1/1 transceiver details Ethernet1/1 transceiver is present type is 10Gbase-(unknown) name is CISCO-FUJITSU part number is FIM35050/203 revision is 0001 serial number is FLJ1708K03G nominal bitrate is 11100 MBit/sec Link length supported for 9/125um fiber is 80 km cisco id is -- cisco extended id number is 4 SFP Detail Diagnostics Information (internal calibration) ---------------------------------------------------------------------------- Current Alarms Warnings Measurement High Low High Low ---------------------------------------------------------------------------- Temperature 59.88 C 75.00 C -5.00 C 70.00 C 0.00 C Voltage 3.24 V 3.63 V 2.97 V 3.46 V 3.13 V Current 78.10 mA 105.00 mA 35.00 mA 98.00 mA 42.00 mA Tx Power 1.70 dBm 6.99 dBm -4.00 dBm 3.99 dBm 0.00 dBm Rx Power N/A -- -3.00 dBm N/A -7.01 dBm -26.98 dBm ---------------------------------------------------------------------------- Note: ++ high-alarm; + high-warning; -- low-alarm; - low-warning *** SFP diagnostics data may be invalid! *** _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
